Bernardo Mitnik (4 September 1934 – 18 August 2023), best known as Chico Novarro, was an Argentine singer-songwriter, composer, musician, television presenter and actor. He specialized in tango and bo
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59d6be038c53f78683c982b31ecb8ea2b73b0f2dd0aee65e090ffe5f6203d08. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/65c6af1a-1224-44f6-8f2c-0d2562ae5c3d.json and https://artists.proofprofile.net/proofs/artist/65c6af1a-1224-44f6-8f2c-0d2562ae5c3d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3eeb8074d0f4460b70ab792a512fdef72646875aa4c77f9459b37ae390287a3. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF100900236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda2bb48bc9ee853e8ae7dd3de79134873b0b7a35c4842564e68a274b990e188. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1713c1c425aa266d667314d92f6eea7ac9a9d863e693cfbf5e9d8fce730e9c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a340b6ddcb3f8895ea0b64062bd0e618b868498566324494f9d2464a3c4b552. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d55712581e24a1bf4fcf2e9a5bdd84fc3e9675d4b43ac24add6b53ed044da2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5fd561024ec584fd29d925b7212b5d59b3241e17d00cc4b26063bf2ef14b71. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4144c43e0306be767c50cbfbe0c2ca3b720ce08d2593e21d3604458102e3b21b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb20d8e0f79680268388e1b53eced4b97250a1cbe46f1b1bb29d340faee1e0e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0ba1cd84b4aec964c57256ee752662747096a150ee3f248129afd483533b4f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903161.
Zoologicamente El Primero - Un Sombrero De Paja
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf578ccfe732f18a057cbdf937e38eb743621fa5571d20b299890e3222fb038b5. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF036300032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30556c09a5174b37affbccacbc915ea3d68a928c2df6662614c152701c01496. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF039500777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ddc68955a093067370b02fda7f1d66e4adebacc633035aee656292a9bdf3698. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF039500774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4447843d89cba8cfb8eebfcec5ee5427cf7556b9fe5f1af8f03717ceef94449. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:29:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF036300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b769f92811fb74df168d00aeab3881179370d23023e76f139e372dd96af4f6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109500377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3972ef735ef2914bd61a7974f4a1314ec6b1de79e8cf46baab3d2218a4d2dc. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF100300430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3567b0c84fe536be3ed0066989fbf2c733917443f8ecaa18a474f60ffeba6a14. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF100300432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1429214c461d586dde5cc306a0688ce278088881e28d927383da59b7c07c7ad. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF100300429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce73203f6b9b8adc89fbce3519ad8ea4081946a1d13d669febf19e349cf41f3d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF100300419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e24b0c3bef7de55e6f473b2da0432a2db516ce92257419f0d17fd72b141321b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF100900238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb20d8e0f79680268388e1b53eced4b97250a1cbe46f1b1bb29d340faee1e0e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0ba1cd84b4aec964c57256ee752662747096a150ee3f248129afd483533b4f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5fd561024ec584fd29d925b7212b5d59b3241e17d00cc4b26063bf2ef14b71. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ARF109903158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1793be6910a1cea1e9e20f92854e2de62fbcdadfdd07420e5179112ee1b065. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:56:14Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/MXF017200253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa879bf24ce6fddedee92ef7c767bd54632d3f28125503bbaa805b4879281e97. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:51:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMFMF2048372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x696e7733324001fd8febea9b029975153b74ff58bd32b15d761086c012320199. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBWUL2274482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca17444906595c426d34bb7e7c1b7ff82e193f8b3b8c4198c5f7d4a98fad5e70. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBWUL2274512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8531bee6be21de481099cca520128960e4c785277f69fae01ea8aceceb674cf6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBWUL2274514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab752abe86eaac0dac26ae6777feb173df54859fa9e6a6b4a096c7866cfa0f61. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBWUL2274612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9647322e9e2177f4573a3e1a9205017cd8075c8326b6d91b92396fd3b1ff625b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:38:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/GBWUL2274641.
Dios en Tus Ojos / Como / Amnesia / Algo Contigo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16acebe032084da93462520e37cc593202d109f395cb6c03d267f0f27932a2ec. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AR8L71300358.